The Pi 4 draws between 3 and 5 W on the average. Power usage of the Pi 4 averaged over time should be something in between.īecause the official USB C power supply supplies 5,1 V, we can turn the mA (m is for milli, a thousandth) into Watts: We take the bottom and top values, 575 mA and 885 mA. I am using the power measurements of the e xcellent Alex Eames of Raspi.TV as base for my calculations. Still, it’s the same person.įor this reason it is important to look at idle power consumption of the Pi 4, but also at the power consumption under heavy load.Īn important thing to also keep in mind before we start: this does not include external devices (USB devices which draw power, for instance external harddrives, SSDs, etc.) – but you can easily add them using the formulas I provide below. #CALCULATE PI ON RASPBERRY PI MOVIE#The Pi 4 can also be compared to a human being: if the person is resting, for instance watching a movie on their KODI media centre, they need much less energy than if they would run a marathon. Depending on what you are using it for, parts of its SoC (the silver chip on the Pi, the ingenious device at the core of the magic of the Pi) will be turned on and off. It does not use (and deliver) the same amount of power consistently over time. The kilowatt hours are the actual work the power utility delivered to your house. This is the power which is delivered is summed up across the time it was delivered. Usually utilities charge in kWh – kilowatt hours. put together, Volt and Ampere yield Watt, the actual power (defined as work per second): 1 W = 1 V * 1 AĪn important thing to keep in mind is that Watts are independent of the voltage, and independent of direct or alternating current being used (DC or AC) – it is the actually delivered power.Same amount of water under different pressure can be pleasant in your bath tub… or cut through steel)
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